Have a F2 with 7x11 DD coil coming Friday. Never been one to use multiple coils. Only used Tesoro's and always put a 8x9 spider coil on all of them. With this F2 I'm thinking maybe a 8 or 10 might be something to look at. Have no desire for a sniper. I want the double d for relic hunts in the forest but do a lot of silver hunting on old lawns. What do you experienced F2 guys think coil choice wise?,, thanks and feeling a little guilty about getting a non Tesoro but my wife does very well with a Ace 250 but I don't care for the sound of that thing. Sometimes change can be good.